Billing Information

We prefer that you set up an account with us. Usually we do our billing after
injection and the invoice is sent to you by mail/email.

We accept credit card payment. You may input the credit card information online via the secure credit card transaction interface; or if you prefer, you may give the information over the phone or fax. We accept Visa, Master, American Express and Discover.

We do not require a Purchase Order number. If your institution
insists to have a PO number for every expense, please put the PO number
in the order form. We will present that number in the invoice.

For all company/commercial accounts, we require 100% payment in advance.

If you have any other billing question or concern, please email us at:
or call +1-888-821-9155